Concept:The vacuole is enclosed by a distinct membrane that separates its internal fluid from the cytoplasm.
Explanation:The membrane surrounding the vacuole is called the
tonoplast.
It is also known as the vacuolar membrane.
This membrane controls the movement of substances between the vacuolar sap and the cytoplasm.
It is present in plant cells and some protists.
Elaioplasts store oils, while amyloplasts store starch.
Cytoplast is not the standard term for this vacuolar boundary.
Therefore, the tonoplast is the correct membrane around the vacuole.
Answer:C. Tonoplast